Autor Thema: Agelenidae under a stone => Eratigena agrestis  (Gelesen 185 mal)

Raffaele Falato

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Agelenidae under a stone => Eratigena agrestis
« am: 2022-01-07 11:27:11 »
Gorgoglione, Province of Matera, Basilicata, Southern Italy.

Discovery date: January 4th, 12 noon, sunny.
Habitat: 920 m - in its silky sack, containing a cocoon, between the outer wall of a mountain church and a stone leaning against it on the ground and partially covered by dry leaves. Around the building there is low and sparse grass, some fir and pine, turkey oaks, countryside.
Dimensions: 11 mm.

Good morning,
I'm not good with Agelenidae yet, so I ask you about the determination of this spider.
Personally, I favor Eratigena agrestis, an adult female also due to the presence of a cocoon in her shelter.

Thanks.
Raf

ag1.jpg
*ag1.jpg (103.41 KB . 695x507 - angeschaut 87 Mal)
ag2.jpg
*ag2.jpg (40.51 KB . 753x369 - angeschaut 90 Mal)
ag3.jpg
*ag3.jpg (43.1 KB . 407x567 - angeschaut 94 Mal)
ag4.jpg
*ag4.jpg (50.99 KB . 863x311 - angeschaut 89 Mal)
ag5.jpg
*ag5.jpg (43.36 KB . 438x549 - angeschaut 88 Mal)
ag6.jpg
*ag6.jpg (87.62 KB . 763x557 - angeschaut 97 Mal)
« Letzte Änderung: 2022-01-16 20:09:28 von Raffaele Falato »

Raffaele Falato

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Re: Agelenidae under a stone
« Antwort #1 am: 2022-01-12 13:10:54 »
Sorry guys,
what is the problem here that prevents determination?

Raf

Simeon Indzhov

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Re: Agelenidae under a stone
« Antwort #2 am: 2022-01-12 16:57:24 »
 
Sorry guys,
what is the problem here that prevents determination?

The hairs covering the epigyne... :D
Simeon

Raffaele Falato

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Re: Agelenidae under a stone
« Antwort #3 am: 2022-01-12 17:25:17 »
But your answer is not complete, dear Simeon.

Which species creates problems?
Eratigena atrica? fuesslini?

Simeon Indzhov

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Re: Agelenidae under a stone
« Antwort #4 am: 2022-01-12 18:33:05 »
The problem is the lack of visibility. Hairs cover most of the epigyne, hiding important details and making any identification speculative, and reflections don't make it easier. If I have to guess, it might be something from the agrestis-fuesslini complex (which may include undescribed or wrongly synonymised species as well). I really don't know.

Raffaele Falato

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Re: Agelenidae under a stone
« Antwort #5 am: 2022-01-12 19:07:08 »
Thanks anyway, Simeon.

Remaining by hypothesis in the complex you mentioned, I would feel like excluding fuesslini, which does not reach 11 mm. Obviously, in Italy I must always consider the possibility of an undescribed or wrongly synonymised species.

Let's wait if someone else can be more precise.

I post another photo of the epigyne, even if I think it is useless
ag6.jpg
*ag6.jpg (37.89 KB . 533x452 - angeschaut 33 Mal)

Simeon Indzhov

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Re: Agelenidae under a stone
« Antwort #6 am: 2022-01-12 19:42:38 »
Well, this gives the impression of Eratigena agrestis (maybe with cf.?)

Raffaele Falato

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Re: Agelenidae under a stone
« Antwort #7 am: 2022-01-12 20:02:19 »
How great is my ignorance!   :-\
This last photo I had put in the background and instead it is the most important (even if I still do not see anything in it, as in the other  :-[).
Thanks Simeon.

Raf